Comparison of three applications of ConTraSPECT

I Laurette, R Clackdoyle, A Welch, F Natterer, G T Gullberg

Research output: Contribution to journalArticle

18 Citations (Scopus)

Abstract

Today, the trend in SPECT attenuation correction is to acquire a transmission data set and reconstruct the corresponding attenuation map, for incorporating into the emission reconstruction. Recently, some techniques have been developed to determine the attenuation map directly from the emission data, by exploiting the fact that in the absence of noise only some specific transmission data can be consistent with given emission data. However it is necessary to include some a priori information so that the consistency conditions can be used in an efficient manner. In this paper, three types of priors are used: a uniform ellipse, a uniform spline curve, and a uniform spline curve knowing the untruncated part of the transmission sinogram. Once the corresponding attenuation map has been computed, it is used to correct for attenuation in the emission image reconstruction process. The three methods have been tested on both simulations and experimentally acquired data. The results show that the two first methods give equally acceptable results, while the third method provides reconstructions which are closer to reconstructions obtained when the attenuation map is computed from untruncated transmission data.

Original languageEnglish
Pages (from-to)2146-2153
Number of pages8
JournalIEEE Transactions on Nuclear Science
Volume46
Publication statusPublished - 1999

Keywords

  • SIMULTANEOUS TRANSMISSION
  • EMISSION TOMOGRAPHY
  • ATTENUATION
  • SPECT
  • RECONSTRUCTION

Cite this

Laurette, I., Clackdoyle, R., Welch, A., Natterer, F., & Gullberg, G. T. (1999). Comparison of three applications of ConTraSPECT. IEEE Transactions on Nuclear Science, 46, 2146-2153.

Comparison of three applications of ConTraSPECT. / Laurette, I ; Clackdoyle, R ; Welch, A ; Natterer, F ; Gullberg, G T .

In: IEEE Transactions on Nuclear Science, Vol. 46, 1999, p. 2146-2153.

Research output: Contribution to journalArticle

Laurette, I, Clackdoyle, R, Welch, A, Natterer, F & Gullberg, GT 1999, 'Comparison of three applications of ConTraSPECT', IEEE Transactions on Nuclear Science, vol. 46, pp. 2146-2153.
Laurette I, Clackdoyle R, Welch A, Natterer F, Gullberg GT. Comparison of three applications of ConTraSPECT. IEEE Transactions on Nuclear Science. 1999;46:2146-2153.
Laurette, I ; Clackdoyle, R ; Welch, A ; Natterer, F ; Gullberg, G T . / Comparison of three applications of ConTraSPECT. In: IEEE Transactions on Nuclear Science. 1999 ; Vol. 46. pp. 2146-2153.
@article{c0fa934ae6404f2585f908473b722fa5,
title = "Comparison of three applications of ConTraSPECT",
abstract = "Today, the trend in SPECT attenuation correction is to acquire a transmission data set and reconstruct the corresponding attenuation map, for incorporating into the emission reconstruction. Recently, some techniques have been developed to determine the attenuation map directly from the emission data, by exploiting the fact that in the absence of noise only some specific transmission data can be consistent with given emission data. However it is necessary to include some a priori information so that the consistency conditions can be used in an efficient manner. In this paper, three types of priors are used: a uniform ellipse, a uniform spline curve, and a uniform spline curve knowing the untruncated part of the transmission sinogram. Once the corresponding attenuation map has been computed, it is used to correct for attenuation in the emission image reconstruction process. The three methods have been tested on both simulations and experimentally acquired data. The results show that the two first methods give equally acceptable results, while the third method provides reconstructions which are closer to reconstructions obtained when the attenuation map is computed from untruncated transmission data.",
keywords = "SIMULTANEOUS TRANSMISSION, EMISSION TOMOGRAPHY, ATTENUATION, SPECT, RECONSTRUCTION",
author = "I Laurette and R Clackdoyle and A Welch and F Natterer and Gullberg, {G T}",
year = "1999",
language = "English",
volume = "46",
pages = "2146--2153",
journal = "IEEE Transactions on Nuclear Science",
issn = "0018-9499",
publisher = "Institute of Electrical and Electronics Engineers Inc.",

}

TY - JOUR

T1 - Comparison of three applications of ConTraSPECT

AU - Laurette, I

AU - Clackdoyle, R

AU - Welch, A

AU - Natterer, F

AU - Gullberg, G T

PY - 1999

Y1 - 1999

N2 - Today, the trend in SPECT attenuation correction is to acquire a transmission data set and reconstruct the corresponding attenuation map, for incorporating into the emission reconstruction. Recently, some techniques have been developed to determine the attenuation map directly from the emission data, by exploiting the fact that in the absence of noise only some specific transmission data can be consistent with given emission data. However it is necessary to include some a priori information so that the consistency conditions can be used in an efficient manner. In this paper, three types of priors are used: a uniform ellipse, a uniform spline curve, and a uniform spline curve knowing the untruncated part of the transmission sinogram. Once the corresponding attenuation map has been computed, it is used to correct for attenuation in the emission image reconstruction process. The three methods have been tested on both simulations and experimentally acquired data. The results show that the two first methods give equally acceptable results, while the third method provides reconstructions which are closer to reconstructions obtained when the attenuation map is computed from untruncated transmission data.

AB - Today, the trend in SPECT attenuation correction is to acquire a transmission data set and reconstruct the corresponding attenuation map, for incorporating into the emission reconstruction. Recently, some techniques have been developed to determine the attenuation map directly from the emission data, by exploiting the fact that in the absence of noise only some specific transmission data can be consistent with given emission data. However it is necessary to include some a priori information so that the consistency conditions can be used in an efficient manner. In this paper, three types of priors are used: a uniform ellipse, a uniform spline curve, and a uniform spline curve knowing the untruncated part of the transmission sinogram. Once the corresponding attenuation map has been computed, it is used to correct for attenuation in the emission image reconstruction process. The three methods have been tested on both simulations and experimentally acquired data. The results show that the two first methods give equally acceptable results, while the third method provides reconstructions which are closer to reconstructions obtained when the attenuation map is computed from untruncated transmission data.

KW - SIMULTANEOUS TRANSMISSION

KW - EMISSION TOMOGRAPHY

KW - ATTENUATION

KW - SPECT

KW - RECONSTRUCTION

M3 - Article

VL - 46

SP - 2146

EP - 2153

JO - IEEE Transactions on Nuclear Science

JF - IEEE Transactions on Nuclear Science

SN - 0018-9499

ER -